Teknik Özellikler
Transkript
Teknik Özellikler
USKON AKIŞKAN KONTROL SİSTEMLERİ SANAYİ VE TİCARET LTD. ŞTİ. Kemankeş Kara MustafaPaşa Mah. Ağaç Tulumba Sok. No: 4/A Karaköy / İstanbul Tel: +90 (212) 251 05 05 Fax: +90 (212) 251 05 79 info@us-kon.com.tr www.us-kon.com.tr The Unique Accelabar Flow Meter The Accelabar is a new and unique flow meter that combines two differential pressure technologies to produce operating ranges never before attainable in a single flow meter. It is capable of generating high differential pressures for measuring gas, liquids and steam at turndowns previously unattainable — with no straight run requirements. RTD (optional) Verabar How the Accelabar Works The Accelabar consists of a unique toroidal nozzle design and a Verabar averaging pitot. The nozzle has a patented straight run “settling distance” that accelerates, linearizes and stabilizes the velocity profile sensed by the Verabar. The Verabar located within the nozzle accurately measures and significantly increases the differential pressure output to increase the operating range (turndown). The Accelabar has a constant flow coefficient and produces an accuracy of up to ±0.50%. ® Accelabar nozzle Other manufacturers claim high accuracy, but over a limited turndown. Stabilizing & linearization section Toroidal inlet No Straight Run Required Diffuser cone The Accelabar can be used in extremely limited straight run piping configurations. The straight run is integral to the meter. The stabilization and linearization of the velocity profile within the throat of the nozzle eliminates the need for any upstream run. Engineering Specifications • Low velocity flow rates • High accuracy: to ± 0.50% F LOW • Repeatability: ±0.050% • Verified flow coefficients • No calibration required • Extended turndown Actual Application Application: (see data on page 4) 3” Sch 40 Natural Gas • Low permanent pressure loss Operating Pressure/ Temperature: 50 PSIG/70° F • Mass or volumetric flow Max/Min Flow Rate: 60,000 SCFH/1,000 SCFH Flow Turndown: 60:1 Straight Run: 0” • No straight run requirements US Patent No. 6,868,741 B2 and various foreign patents pending. 2 USKON AKIŞKAN KONTROL SİSTEMLERİ SANAYİ VE TİCARET LTD. ŞTİ. Kemankeş Kara MustafaPaşa Mah. Ağaç Tulumba Sok. No: 4/A Karaköy / İstanbul Tel: +90 (212) 251 05 05 Fax: +90 (212) 251 05 79 info@us-kon.com.tr www.us-kon.com.tr Verabar Provides the Accuracy The proven technology of the Verabar makes the Accelabar work. It accurately measures the flow rate within the nozzle. Its unique bullet shape, constant flow coefficient, solid one-piece construction, non-clog design and signal stability make it the only design capable of producing the overall performance. Flow Test Accelabar Flow Meter Flow Coefficient vs. Reynolds Number Date 8-21-02 0.500 0.490 Accuracy ±0.75% Flow Turndown 65:1 0.480 Flow Coefficient (K) 0.470 Verified Accuracy and Flow Coefficients Empirical test data from independent 0.460 laboratories verified an analytical model 0.450 and flow coefficients as constant and 0.440 independent of Reynolds Number 0.430 Published Flow Coefficient: 0.4568 Reynolds Number Range: 6,517 to 438,160 Flow Turndown: 65 to 1 DP Turndown: 2,293 to 1 (0 .111” H 2O to 255.51” H 0.420 0.410 0.400 0 50 100 150 200 250 Reynolds Number 300 1,000 350 and within ±0.75% of the predicted value over a flow turndown of 65:1 2 O) 400 (see actual test). This eliminates 450 the need for calibration. 3 USKON AKIŞKAN KONTROL SİSTEMLERİ SANAYİ VE TİCARET LTD. ŞTİ. Kemankeş Kara MustafaPaşa Mah. Ağaç Tulumba Sok. No: 4/A Karaköy / İstanbul Tel: +90 (212) 251 05 05 Fax: +90 (212) 251 05 79 info@us-kon.com.tr www.us-kon.com.tr Comparative Analysis vs. Other Flow Meters Flow Turndown The Accelabar fills the need not presently being filled by other flow meters for applications that: Maximum & Minimum • Do not have sufficient velocity to produce a readable signal or sufficient turndown • Require the highest accuracy over an extended range • Have little or no straight run piping before the meter The Accelabar performance characteristics far exceed those of other DP meters, vortex meters and many other flow meters. These charts show the actual performance characteristics of the Accelabar versus other flow meters based on the following flow conditions: Flow Turndown Accelabar vs. Vortex Flow Conditions Fluid Natural Gas Pipe Size 3” Sch 40 Max Flow 60,000 SCFH SG 0.6 Pressure 50 psig Temperature 70°F Pipe Line Velocity 74 ft/sec Minimum Straight Run Requirements Accelabar Increased Velocity Fluid Velocity — Pipe Line vs. Accelabar Throat DP at Maximum Flow Inches H 2O — 3” Natural Gas 60,000 SCFH Permanent Pressure Loss 4 USKON AKIŞKAN KONTROL SİSTEMLERİ SANAYİ VE TİCARET LTD. ŞTİ. Kemankeş Kara MustafaPaşa Mah. Ağaç Tulumba Sok. No: 4/A Karaköy / İstanbul Tel: +90 (212) 251 05 05 Fax: +90 (212) 251 05 79 info@us-kon.com.tr www.us-kon.com.tr The Proof Is In The Data Many flow meters claim high accuracy and rangeability or turndown. However, few manufacturers define their limitations and even fewer can support it with actual test data. The tests below show the performance capabilities of the Accelabar. Turndown Test Test Specifications* Pipe Size: Fluid: 0.500 0.490 0.480 3” sch 40 Air Flow Rate: 145 ACFM Max Pressure: 60 psig Max Temperature: 75°F 0.470 Results 0.460 The Accelabar produced a DP of 255.5” H 2 O at 145 ACFM. An accuracy of ±0.75% was maintained over a Reynolds Number range of 65 to 1. No other flow meter is capable of this operating range. 0.450 0.440 0.430 0.420 0.410 *Independent, NIST traceable tests were performed as follows: • Air tests in 3”, 4”, 6” and 12” pipes • NIST traceable water tests • Large turndown natural gas testing • Short straight-run testing Consult factory for a copy of certified tests. 0.400 No Straight Run Test Comparison Test Specifications Results The Accelabar was tested immediately downstream of a valve, tee and expander assembly with no straight run upstream. The short run test plotted with the standard straight run test verifies there is no shift in the flow coefficient. 5 USKON AKIŞKAN KONTROL SİSTEMLERİ SANAYİ VE TİCARET LTD. ŞTİ. Kemankeş Kara MustafaPaşa Mah. Ağaç Tulumba Sok. No: 4/A Karaköy / İstanbul Tel: +90 (212) 251 05 05 Fax: +90 (212) 251 05 79 info@us-kon.com.tr www.us-kon.com.tr Dual Transmitter Ready to Install The Accelabar is a complete flow meter ready to install. It comes complete with single or dual transmitters depending on the turndown requirements. Single Transmitter An optional RTD is supplied in a Thermowell for dynamic compensation (required for use with multivariable transmitter). Transmitter AF Flanged Model Manifold head Weld neck RF flange Retaining plate RTD (optional) Verabar Packing follower Chart A Graphite packing Accelabar flow nozzle L Accelabar Model Selection 1. Furnish your flowing conditions. A flow calculation is required to determine the DP and verification of the operating limits. • Each meter size has a standard beta ratio sized for the optimal operating range. • The maximum operating limits are determined by the Accelabar flow calculation. Face to Face “L”* 300# Meter Size Verabar Sensor 3” (75mm) -05 1/2” 13.78” 14.53” 15.28” 4” (100mm) -05 1/2” 15.15” 15.90” 17.65” 6” (150mm) -10 1” 19.15” 19.90” 21.90” 8” (200mm) -10 1” 21.40” 22.15” 24.40” 10” (250mm) -10 1” 23.15” 24.40” 27.65” 12” (300mm) -10 1” 26.17” 27.78” 29.67” 150# 600# * Face to face dimensions nominal. Custom lengths available. Specifications Accuracy to ± 0.50% Repeatability ±0.050% Sensor, Body & Flange 316SS 2. If your flowing conditions exceed the operating limits, a larger or smaller model (meter size) must be selected. Flowing Conditions General Data Fluid Parameters Ta g numbe r F low R a te Pipe size & schedule or exact ID & wall thickness Pressure Temperature F luid na me : D e ns ity* Maximum Normal Minimum Units *Density is not required for steam applications. 6 USKON AKIŞKAN KONTROL SİSTEMLERİ SANAYİ VE TİCARET LTD. ŞTİ. Kemankeş Kara MustafaPaşa Mah. Ağaç Tulumba Sok. No: 4/A Karaköy / İstanbul Tel: +90 (212) 251 05 05 Fax: +90 (212) 251 05 79 info@us-kon.com.tr www.us-kon.com.tr Model AFS ABS Accelabar 316SS Flanged Connections Bevel for Weld User Mating Pipe Size and Schedule or Exact ID and Wall Thickness Code 150 300 600 User Mating Flange (Model AFS Only) 150# ANSI Class 275 psig @ 100°F, 80 psig @ 800°F (19 Bars @ 38°C, 5.5 Bars @ 426°C) 300# ANSI Class 720 psig @ 100°F, 330 psig @ 800°F (49.6 Bars @ 38°C, 22.8 Bars @ 426°C) 600# ANSI Class 1440 psig @ 100°F, 660 psig @ 800°F (99.3 Bars @ 38°C, 45.5 Bars @ 426°C) If other than ANSI, specify Standard (DIN, JIS) Size and Rating Code Flange Material C S Carbon Steel Stainless Steel Accelabar Meter Size Important: If the selected meter size is larger or smaller than the user’s mating pipe and flange, expanders or reducers are required. Consult the factory for price and delivery. 3” (75mm) Code 4” (100mm) 6” (150mm) 8” (200mm) 10” (250mm) 12” (300mm) Verabar Size 05 10 7/16” (11mm) 7/8” (22mm) Code H V Pipe Orientation Horizontal Vertical Instrument Head Connections (Select Remote or Direct Mount Transmitter—Sold Separately) Direct Mount Transmitter Remote Mount Transmitter (F l a n g e d 4 5 0 ° F / 2 3 2 ° C M a x . ) Manifold (1 / 2 ” N P T ) Transmount Valve Inte gra l Regular Parallel Inte gra l M F T R Manifolds (Optional) P Instrument Valves D ir e c t M o u n t 3-Valve Soft Seat 5-Valve Hard Seat F3SC (CS) F3SS (SS) F3HC (CS) F3HS (SS) Code H1 H2 HT NH (Optional) R e m o te M o u n t Soft Seat F5SC (CS) F5SS (SS) Needle 1/2” NPT 1/2” NPT C2NC (CS) C2NS (SS) C2GC (CS) C2GS (SS) Hard Seat F5HC (CS) F5HS (SS) Gate RTD in Thermowell Hazardous Location, Class 1 Div 1, Explosion Proof Hazardous Location, Class 1 Div 2, Non-Incendive Wiring High Temperature (500ºF to 900ºF, 260ºC to 482ºC) Non-Hazardous Location Code Optional Optional XP N4 Connection Cable to Transmitter (Direct Mount Only) Explosion Proof (hazardous locations) NEMA 4 Optional AFS 6” Sch 40 150 SS 4” 05 H R C2NC H2 XP For Transmitter Selection, see Page 8. USKON AKIŞKAN KONTROL SİSTEMLERİ SANAYİ VE TİCARET LTD. ŞTİ. Kemankeş Kara MustafaPaşa Mah. Ağaç Tulumba Sok. No: 4/A Karaköy / İstanbul Tel: +90 (212) 251 05 05 Fax: +90 (212) 251 05 79 info@us-kon.com.tr www.us-kon.com.tr 7 Transmitter Selection Accelabar accuracy is percent of rate. The Accelabar maintains a constant flow coefficient over a wide range of flow rates and differential pressures. Single Transmitter Dual Transmitter DP transmitter accuracy is percent of scale. While most Accelabar installations are equipped with one DP transmitter, some applications requiring superior accuracy over an extreme DP turndown may require a dual DP transmitter installation. Installation Orientation D ir e c t M o u n t R e m o te M o u n t Instrument tubing & fittings not included Gas Mount to top of pipe Transmitter Verabar Manifold head Gas 160º Manifold Transmitter Gas Mount to top of pipe 160º Steam Verabar Instrument valves Steam & Liquid Mount to bottom of pipe Verabar Gas 160º Fill tee (steam only) 160º Steam Verabar Transmitter Manifold Manifold head Transmitter Instrument tubing & fittings not included Steam & Liquid Mount to bottom of pipe ISO 9001 Certified True Performance in Flow Measurement • Niwot, CO 80503 USA • Phone: 303-652-8550 6315 Monarch Park Place E-Mail: contact @ veris-inc.com • Website: www.veris-inc.com • Fax: 303-652-8552 VB-7100F (6/08) Printed in USA USKON AKIŞKAN KONTROL SİSTEMLERİ SANAYİ VE TİCARET LTD. ŞTİ. Kemankeş Kara MustafaPaşa Mah. Ağaç Tulumba Sok. No: 4/A Karaköy / İstanbul Tel: +90 (212) 251 05 05 Fax: +90 (212) 251 05 79 info@us-kon.com.tr www.us-kon.com.tr